I'd get at least one more female, because right now you are at: 2 females per male, and 1 female per male essentially. Since you said they are chasing each other around the tank, I'd definitely say you need more females. The reason for more females, is to take the stress off other females for a while. Males are very breeding-crazy. If the females get too stressed out by this, they are more prone to sickness and they could possibly abort their fry, have birthing troubles, or even die.
I personally wouldn't put the female in the breeder net. They tend to stress them out, once again making them more prone to sickness, aborted fry, birthing troubles, or death. Usually the best bet is to plant up the main tank, and let her give birth in there then catch the fry as you see them and raise them in the breeder net. What size tank are these guys in? But if you absolutely want to use a breeder net, don't let her stay in there for more then three days. After that you need to take her out, and let her swim in the main tank again. In a couple days, if you really want, you can put her back in the net, but moving her all about is going to stress her out a lot, hence why I suggest you plant/decorate up the main tank so the fry can hide.
Another option is a small fry tank. 10 gallons is really the minimum I'd say for that. Then you put the pregnant fish in there, and let her settle in. She'll be able to give birth in peace and that will be much better for her and the fry.
If you want to do a fry tank, let me know, because I have another ramble about that.
Now, my fry feeding ramble.
When they are first born, Tetramin Fry Food or Hikari First Bites are best for them. Baby Brine Shrimp is good suppliment to this, or you can just feed BBS but it's best to vary. Once they grow up a bit, you can add in finely crushed flakes and Freeze-dried, Frozen, or Live foods, such as Bloodworms, Brine Shrimp, Tubifex Worms..etc. You just have to make sure it's small enough for them. However, don't feed them just the Freeze-dried/Frozen/Live...too many high-protein foods can cause bloating or constipation. As the fry continue to grow, you can keep feeding them the same thing, just slightly bigger pieces. And eventually they'll be eating as same as the adults! Though by then they'll probably be with the adults. You can also try small pieces of blanched veggies, like cucumber, zucchini, peas...etc.
Hope this helps some! And yeah, feel free to call me Anna. Everyone else does.
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